Class File and Directory in C#

Class File and Directory in C#.........................................

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.IO;

namespace TestFile

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

// invoked when user presses key...............

private void txtinput_KeyDown(object sender, KeyEventArgs e)

{

//determine whether user pressed Enter Key...

if (e.KeyCode == Keys.Enter)

{

string filename = txtinput.Text;

if (File.Exists(filename))

{

GetInformation(filename);

StreamReader stream = null; //declare StreamReader.....

try

{

stream = new StreamReader(filename);

txtoutput.AppendText(stream.ReadToEnd());

}

catch (IOException)

{

MessageBox.Show("Error reading from File", "File Error", MessageBoxButtons.OK, MessageBoxIcon.Error);

}

}

//determine whether filename is a Directory...............

else if(Directory.Exists(filename))

{

GetInformation(filename);

string[] directoryList = Directory.GetDirectories(filename);

txtoutput.AppendText("Directory Contents:\n");

foreach (var directory in directoryList)

{

txtoutput.AppendText(directory + "\n");

}

}

else

{

MessageBox.Show(txtinput.Text + "  "+"   does not exist", "File Error", MessageBoxButtons.OK, MessageBoxIcon.Error);

}

}

}

private void GetInformation(string filename)

{

txtoutput.Clear();

txtoutput.AppendText(filename + "  "+"is exists\n");

//output when file or dirctory was created.............

txtoutput.AppendText("Created:" + File.GetCreationTime(filename) + "\n");

//output when file or dirctory was modified.............

txtoutput.AppendText("Last Modified:" + File.GetLastWriteTime(filename) + "\n");

//output when file or dirctory was accessed.............

txtoutput.AppendText("Last Accessed:" + File.GetLastAccessTime(filename) + "\n");

}

}

}